Feeding disorders are complex and do cause a lot of concern among parents. If they are severe then they can cause failure to thrive and problems with growth. Children often have specific aversions to different types of foods but it is important to distinguish the picky eater from the child with a pathological feeding aversion.
It can be hard to determine what the cause of the problem is. A detailed history, observation and tests can help. These sometimes involve special X-rays with a contrast study, gastroscopy, video fluoroscopy.